Method coerceArgs

java/lib/src/main/java/io/github/ccxt/Helpers.java:684–713

Coerce arguments to match the method's parameter types. Handles common numeric type mismatches from JSON parsing (e.g., Integer→Long, Integer→Double, Long→Double).

(Method m, Object[] args)

 * (e.g., Integer→Long, Integer→Double, Long→Double).
 */
private static void coerceArgs(Method m, Object[] args) {
    Class<?>[] ptypes = m.getParameterTypes();
    int count = Math.min(args.length, ptypes.length);
    for (int i = 0; i < count; i++) {
        if (args[i] == null) continue;
        Class<?> expected = ptypes[i];
        if (expected == Object.class || expected == Object[].class) continue;
        if (expected.isInstance(args[i])) continue;

        // Numeric coercion
        if (args[i] instanceof Number n) {
            if (expected == Long.class || expected == long.class) {
                args[i] = n.longValue();
            } else if (expected == Double.class || expected == double.class) {
                args[i] = n.doubleValue();
            } else if (expected == Integer.class || expected == int.class) {
                args[i] = n.intValue();
            } else if (expected == Float.class || expected == float.class) {
                args[i] = n.floatValue();
            }
        }
        // String coercion for numeric strings
        else if (args[i] instanceof String s && (expected == Long.class || expected == Double.class)) {
            try {
                if (expected == Long.class) args[i] = Long.parseLong(s);
                else args[i] = Double.parseDouble(s);
            } catch (NumberFormatException ignored) {}
        }
    }
}

private static Object[] adaptForVarArgs(Method m, Object[] args) {
    if (!m.isVarArgs()) return args;